Hadith 3463
Narrated Ibn Abbas: When the Messenger of Allah ﷺ came to Madina, they were paying one, two and three years in advance for fruits, so he said: Those who pay in advance for anything, must do for a specified measure and weight with a specified time fixed.
Hadith 3478
Narrated Iyas ibn Abd: The Messenger of Allah ﷺ forbade the sale of excess water.